Toothbrush head



FIG. 1 is a front view of a toothbrush head in accordance with my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof, the left side view being identical;

FIG. 4 is an enlarge top view thereof; and,

FIG. 5 is an enlarged bottom view thereof.

The broken lines illustrate portions of the toothbrush head that form no part of the claimed design. 

CLAIM The ornamental design for a toothbrush head, as shown and described. 